Ratchet mechanism.



G. R. BARKER'.

RATCHET MECHANISM.

APPLmAUoN man. Nov. 14. :9.11.

Patented Jan. 21, 1919.

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lUNITED STATES PATENT oEEioE.

GEORGE R. BARKER, OE CHICAGO, ILLINOIS, AssIGNOR To WILSON, ROBERTS & MONROE, 0E NEW YORK, N. Y., A CORPORATION or NEW YORK.

RATCHET MECHANISM.

Specicatlon of Letters Patent.

Patented J an. 21, 1919.

Application filed November 14, 1917. Serial No. 202,009.

To all whom z't maw concern Be it known that I, GEORGE R. BANNER, a citizen of the United States, residing at Chicago, in the lcounty of Cook and State of Illinois, have invented a new and useful Improvement in Ratchet Mechanism, of which the following is a specification.

My primary objects are to provide 1mprovements in devices of the character above stated and particularly when employed 1n grease guns, to the end that they may be slmnliied, be less liable to become impaired for use, the cost of construction reduced, and be readily folded into compact condition for stora` e.

Re erring to the accompanying drawing, Figure 1 is a view in side eleva-tion of a grease gun embodying my improved ratchet mechanism. Fig. 2 is a plan view, partly broken, of one end of the device. Flg. 3 is a section taken at the line 3-3 on Fig. 1 and viewed in the direction of the arrow, and Fi 4 an end view of the device.

The arrel of the device and which by preference is of cylindical form, is represented at 10, this barrel having a contracted discharge spout 11 and containing a piston 12 for forcing from the barrel, the grease or other material with which it is charged. The outer end of the stem 13 of the piston is provided along a side thereof with ratchetteeth 14, with which coperates an oscillatory-mounted handle-device 15 for forcing the piston toward the discharge end of the barrel by a step-by-step movement, the outer extremity of this stem having a handle-section 135L preferably extending to one side only of the stem. The handle-device shown is formed intermediate its ends with a slot 16 at which it straddles the piston-stem 13, the wall of the slot 16 at one end and represented at 17 forming a tooth which is adapted to engage the ratchet-teeth 14. The handle-device l5 is pivoted at 15 to a pair of links 18 pivotally connected with the barrel 10 through the medium of a clip 19, this clip being connected with the end of the barrel, rs by the rivets 20 and having ears 21 spaced apart between which the links 18 extend and to which the latter are pivoted by the pin 22.

In the operation of the device, the operator grasping the barrel in one hand oscillates the handle-device 15 with the other, the surface 17 of the handle-device in the movement of the handle in one direction interlocking with one of the teeth 14 to force the piston forward and in the return movement riding over the teeth, the link-connection of the device 15 with the barrel, permitting this action.

In order that the device may be readily folded into compact condition for storage, the slot 16 is made of such dimensions that when the piston is in inward position, the handle-device 15 may be swung upwardly and outwardly out of a position in which it straddles the stem to a position in which it lies along side the barrel and substantially parallel therewith, this feature of my construction avoiding the necessity of disconnecting or unclamping or unscrewing parts of the device, to reduce it to folded condition.

It will be understood that if desired, the device may also be used with gasolene or other lubricants than grease, and where the material to be forced from the device is of relatively thin consistency, the piston may be operated through the medium of -the handle-section 13a.

While I have illustrated and described a particular embodiment of my invention, I do not wish to be understood as intending to limit it thereto, as the same may be modified and altered without departing from the spirit of mv invention, it being my intention to claim my invention as fully and completely as the prior state of the art will permit.

What I claim as new and desire to secure by Letters Patent is:

1. In mechanism of the character set forth, the combination of a sliding member having ratchet teeth along a side thereof, and a pivotally supported handle-device having a surface forming a tooth for engaging said ratchet teeth, said handle-device being mounted for movement bodily at its pivotal support relative to said sliding member, for the purpose set forth.

2. In mechanism of the character .set forth, the combination of a sliding member having ratchet teeth along a side thereof, a handle-device, a support, and means pivotally connecting said handle-device with said support for movement bodily at its pivotal support relative to said sliding member comprising a pivoted link connection between said handle-device and support, said the other ends of which said handle-device iS pivoted, said links straddling said stem .and said handle-device having a Surface forming* a tooth for engaging said ratchetL and a pivoted link connection between said handle-device and support, said handle-device having a surface formed as a rigid part thereof and forming a tooth for engaginD said ratchet teeth.

Ll. In mechanism of the character Set forth, the combination of a sliding member having ratchet teeth along a side thereof, and a pivotally Vsupported hand1ed`evice straddling said sliding member and having a :2u-ii surface forming a tooth for engaging said ratchet teeth, said handle device being mounted for movement bodily at its pivotal connection, relative to said rack.

GEORGE R. BAKKER.

Copies of this patent may be obtained yfor ve cents each, by addressing the Coissioner of Patente,

Washington, D. Q. 

